davisgurl101
Is the following relation a function?
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davisgurl101
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hsmt
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are you still there?
davisgurl101
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yes
hsmt
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well, for each individual x there can be only one y
hsmt
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that is, if you want the relation to be a function.
akash_809
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for a relation to be a function, for one value of x ther should only be one value of x
hsmt
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another way to do this is to graph it
akash_809
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for x=-1, there are two values of y
hsmt
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exactly right akash.
akash_809
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making a graph would make this tedious
hsmt
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not really. only what four or five points, and remember, some people are more visual
akash_809
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@davisgurl101 did u get this
davisgurl101
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i dont under stand
akash_809
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but seeing the set would make it easy to solve, if u draw the graph then u have to dwar a line parallel to y -axis and see at how many points the line cuts the graph...
akash_809
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a relation is afunction if and only if a value of x in the relation corrospons to unique value of y...can u understand this definition
akash_809
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@davisgurl101 if u understand the above definition then you should have ur answer, if u don't ask ur doubt